NDLI: Enhancing a web-server cluster with quality of service mechanisms

Content Provider	IEEE Xplore Digital Library
Author	Cardellini, V. Casalicchio, E. Colajanni, M. Mambelli, M.
Copyright Year	2002
Description	Author affiliation: Tor Vergata Univ., Rome, Italy (Cardellini, V.)
Abstract	We introduce the concept of "quality of web-based services" (QoWS) which is inspired by the well known QoS principles for networks, but it is focused on the server side of the web system. In particular, we investigate how it is possible to enhance with QoWS mechanisms a web site that is hosted on a system platform consisting of locally distributed server nodes, namely web-server cluster or web cluster in short. We discuss and compare some QoWS policies and mechanisms that can be used to transform a best-effort web cluster into a QoWS-enhanced system. We determine a set of confident Service Level Agreements (SLAB) in a web cluster for different classes of users and web services. Moreover; we verify through a large set of simulation experiments under realistic workload models which mechanisms are valid for satisfying the pre-determined SLA target.
Sponsorship	IEEE Comput. Soc.
Starting Page	205
Ending Page	212
File Size	862415
Page Count	8
File Format	PDF
ISBN	0780373715
DOI	10.1109/IPCCC.2002.995152
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-04-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quality of service Network servers Web server Web services Resource management Nonhomogeneous media Pricing Telecommunication traffic Scheduling algorithm Proposals
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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